CN108298675A - A kind of drop nitrogen subtracts the lake water ecological restoring method of phosphorus - Google Patents
A kind of drop nitrogen subtracts the lake water ecological restoring method of phosphorus Download PDFInfo
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Abstract
The application discloses a kind of lake water ecological restoring method for dropping nitrogen and subtracting phosphorus, including：Step 1：Biological treating is carried out to entire lake water waters using biotechnology；Step 2：In revetment, into bank water body and mainly enter the bottom mud in the exit of a lake and carry out physics cleaning, improves oxygen content of water and transparency；Step 3：Enter in revetment, offshore and mainly the exit of a lake respectively and transplant the strong submerged plant of the strong emergent aquactic plant of soil pick-up ability, detergent power and floating plant with stronger detergent power and ornamental value respectively；Step 4：Ecological management is carried out to it using artificial floating island technology, the structure new type health ecosystem in the central area in lake water waters, the water quality of part water body is made to get a promotion；Adhere to that contamination control is laid equal stress on water ecology, first effectively primary pollution source is eliminated in control, then orderly implements water ecology reparation, final to establish healthy aquatic ecosystem；And it establishes and continues monitoring mechanism, monitoring is administered and repairing effect.
Description
Technical field
The invention belongs to the lake water ecological restoring methods that the groundwater pollution control of water body, in particular to a kind of drop nitrogen subtract phosphorus.
Background technology
Existing lake causes water body sense organ is poor to be primarily present following reason：
One, body eutrophication
It refers to that the plant nutrient substances contents such as the Waters phosphorus such as lake are excessively drawn that body eutrophication, which is also referred to as wawter bloom,
The water pollution phenomenon risen.Due to the enrichment of Water phosphorus nutrition substance, cause the rapid numerous of algae and other planktonic organisms
It grows, Dissolved Oxygen in Water content is made to decline, cause algae, planktonic organism, plant, aquatic organism and fish the decline even pollution of disappearance
Phenomenon.The aquatile of mortality deposits to lakebed, is decomposed by the microorganisms, and consumes a large amount of dissolved oxygen, makes Dissolved Oxygen in Water
Content drastically reduces, water quality deterioration, so that influencing the existence of fish, has greatly accelerated the eutrophication process of water body.Water body
When there is eutrophication, due to planktonic organism mass propagation, often make water body that blue, red, brown, milky be presented
Deng.The algae foul smelling, toxic in the waters of wawter bloom phenomenon occurs, fish cannot eat.Algae shielded from sunlight makes water-bed plant
It dies because photosynthesis is hindered, the nutriment of the plants such as nitrogen, phosphorus is released after corruption, then utilize for algae.Such year
The deep moon is long, causes vicious circle, algal bloom, water quality deterioration and stench, and anoxic in water causes fish death by suffocation.
1) water body is propagated artificially：
Fishing ground manually launches bait for a long time and the excreta Feed volume of fish has tired out a large amount of nitrogen phosphorus.In addition nearby occupying
The people have many privately owned waters cultivation places, and for the artificial pollutants such as bait of launching after the rain as flow flows into lake, day accumulates the moon
Tire out and increases a large amount of nitrogen phosphorus to water body.
2) farmland class chemical fertilizer：
Surrounding often has farmland and economical crops, to promote plant growth, improves the yield of agricultural product, people's often application compared with
More nitrogenous fertilizer and phosphate fertilizer, as water and soil flows into lake after rain.
3) rainwash：
Lake surrounding road surface is largely waterproof ground, and nitrogen and phosphorus object mainly enters with rainwash in surface water.Nitrogen
Phosphorus nutrients essentially from the house refuse of the mankind, sanitary sewage and with certain industry and commerce waste water.
4) excrement of animals：
Lake peasant's stable breeding nearby poultry, domestic animal will produce a large amount of excretas for being rich in nutrients and bacterium, easily with earth's surface
Runoff, sub-surface stream run into a lake and polluted-water.In addition, excessively applying animal waste in farmland, can also cause in excrement
Nutrients is lost in rainwash, sub-surface stream, to polluted-water.
5) atmospheric sedimentation
Atmospheric sedimentation is not only one of source of suspended particulate substance, pernicious gas and one of the source of nitrogen.Fuel combustion
When, nitrogen enters air in the form of nitrogen oxides, and soil or water surface, polluted surface water source are dropped to sleet.
Two, a large amount of of extraneous sewage are discharged into：
The waters in the neighbouring small towns in lake region is usually collected in waters in lake, and water after a large amount of sanitary sewage, field irrigation is supported
It grows a large amount of polluted-waters such as the water that water, the industrial refuse that field comes out generate directly to run into a lake by entering the exit of a lake, increases lake
The pollution level of water.
Therefore, a kind of lake water ecological restoring method for dropping nitrogen and subtracting phosphorus how is researched and developed, can solve the above problems, become as urgently
Technical problem to be solved.
Invention content
The main problem that the application solves is to provide a kind of lake water ecological restoring method for dropping nitrogen and subtracting phosphorus, adheres to contamination control
Lay equal stress on water ecology, first effectively primary pollution source is eliminated in control, then orderly implements water ecology reparation, final to establish health
Aquatic ecosystem is effectively combined with design naturally by artificially designing, realizes nutritive salt-planktonic organism-submerged plant-large size
The Optimum Regulation of the groups such as zoobenthos-ominivore-fish-predacious fish keeps clear water type ecosystem structure reasonable, healthy,
Play one's part to the full, stable, long-acting operation, with solve in the prior art the technical issues of.
In order to solve the above-mentioned technical problem, the invention discloses the lake water ecological restoring method that a kind of drop nitrogen subtracts phosphorus, skills
Art scheme is as follows：
A kind of drop nitrogen subtracts the lake water ecological restoring method of phosphorus, which is characterized in that including：
Step 1：Biological treating is carried out to entire lake water waters using biotechnology；
Step 2：Revetment, into bank water body and mainly enter the exit of a lake bottom mud carry out physics cleaning, improve water body it is oxygen-containing
Amount and transparency；
Step 3：Respectively revetment, offshore and mainly enter the exit of a lake transplant respectively the strong emergent aquactic plant of soil pick-up ability, purification energy
The strong submerged plant of power and floating plant with stronger detergent power and ornamental value；
Step 4：Use artificial floating island technology, the structure new type health ecosystem to it in the central area in lake water waters
Ecological management is carried out, the water quality of part water body is made to get a promotion.
Further, the step 1 includes the following steps：
Step 1：It is carried out disinfection to lake water water bottom using particle or tablet, is disappeared to water body using powder medicament
Poison；
Step 2：The chlorella of preculture is put into the waters；
Step 3：Granular pattern and pulvis beneficial bacterium floc sedimentation are put into the waters；
Step 4：Compound high-activity carbon source liquid flora is put into the waters.
Further, floating refuse blocking apparatus is laid in waters；
Aeration oxygen replenishing circulator is laid in waters, for the purification of water quality to lake natural water body, can effectively be reduced
The contamination indexes such as the organic pollution and ammonia nitrogen of water body improve the eutrophication of water body, prevent algae to removing black and odorous water
The wawter bloom etc. of class has positive effect.
Further, the structure new type health ecosystem includes：Input or plant can constitute complete bio chain
Microorganism, planktonic organism, submerged plant, macrobenthos, ominivore-fish and predacious fish.
Further, further include step 5：To carrying out water quality and aquatile Monitoring Indexes, institute is formulated according to monitoring result
The Adjusted Option of the new type health ecosystem is stated, the Adjusted Option of the new type health ecosystem includes：
After submerged plant is successfully transplanted, is judged according to water quality and aquatile Indexs measure situation, implement water in time
Body transparency promotes engineering and submerged plant surface attachments remove engineering.
Further, it includes implementing nitrogen source to cut down engineering, Phytoplankton biomass control that the water transparency, which promotes engineering,
Engineering processed and/or suspended substance sedimentation engineering.
Further, it includes increasing macrobenthos that the submerged plant surface attachments, which remove engineering construction method,
Injected volume and/or appropriateness disturbance submerged plant.
Further, the Adjusted Option of the new type health ecosystem further includes：According to Submerged plant communities structure tune
Data are looked into, growth vigor of the various submerged plants in lake region is analyzed and select the dominant population in the waters, to the advantage
Population carries out following amplification steps：
Step is 1.：According to the reproductive habit of submerged plant, select suitable plantation season, plant plant, program request stem tuber or
It scatters seeds；
Step is 2.：Closeer region strand is grown in submerged plant dominant population to pull out, plant grows sparse to dominant population
Region.
Further, the Adjusted Option of the new type health ecosystem further includes：It is monitored and is tied according to Fish Community Structures
Fruit concentrates fishing ominivore-fish when ominivore-fish biomass accounts for the ratio of total biomass in 20%-30% or more；
It is annual to concentrate fishing predacious fish adult the 10-11 months；The annual 3-4 months, put predacious fish fry in a suitable place to breed in due course.
Further, further include sudden pollusion atmospheric event contingency management step, which includes：
When oil liquid is spread, with semi-floating enclosure circle every perimeter is gradually reduced；Oil liquid Relatively centralized
Afterwards, asphalt felt is shed to the water surface, is removed after absorption；
When alga eruption, the greening of water body color turns yellow, and adopts phytoplankton sample inspection rapidly, determines algicide user
Case carries out killing algae operation；If there is algal bloom, algae is gathered in the water surface, uses alga removing ship to carry out algae collection and water immediately
Algae mask work；
It when water body muddiness, is influenced by some factors, suspended particulate amount increases sharply in a relatively short period of time in water body, leads
It causes transparency to decline, Novel environment-friendlymaterial material can be used to promote sedimentation；
When dissolved oxygen is less than 4mg/L in water body, artificial oxygenation should be carried out；
When poisonous and harmful substance enters local water body, curtain-type enclosure should be timely used and block isolation, and use diving
Pump detaches contaminant water；
When dense sewage or flood largely enter water body, spillway should be opened in time and quickly discharged water.
Compared with prior art, drop nitrogen described herein subtracts the lake water ecological restoring method of phosphorus, has reached following effect：
This method is scientific and reasonable, adheres to that contamination control is laid equal stress on water ecology, and first effectively primary pollution source is eliminated in control, then orderly real
Water ecology reparation is applied, it is final to establish healthy aquatic ecosystem；
And people-oriented, people's water is harmonious, builds the water environment being mutually uniformly coordinated with surrounding enviroment construction；Further
On the basis of amputating primary pollution source, based on water body in-situ improvement and restoration of the ecosystem；And it establishes and continues monitoring mechanism, monitoring
Improvement and repairing effect；Water correction is combined and coordinated with each other with protection engineering with lake view construction, and what is substantially improved is same
When improve appreciation effect.
Specific implementation mode
Some vocabulary has such as been used to censure specific components in specification and claim.Those skilled in the art answer
It is understood that hardware manufacturer may call the same component with different nouns.This specification and claims are not with name
The difference of title is used as the mode for distinguishing component, but is used as the criterion of differentiation with the difference of component functionally.Specification
Subsequent descriptions be implement the application better embodiment, so it is described description be for the purpose of the rule for illustrating the application,
It is not limited to scope of the present application.The protection domain of the application is when subject to appended claims institute defender.
Embodiment one：
A kind of drop nitrogen subtracts the lake water ecological restoring method of phosphorus, which is characterized in that including：
Step 1：Biological treating is carried out to entire lake water waters using biotechnology；
Step 2：Revetment, into bank water body and mainly enter the exit of a lake bottom mud carry out physics cleaning, improve water body it is oxygen-containing
Amount and transparency；
Step 3：Respectively revetment, offshore and mainly enter the exit of a lake transplant respectively the strong emergent aquactic plant of soil pick-up ability, purification energy
The strong submerged plant of power and floating plant with stronger detergent power and ornamental value；
Step 4：Use artificial floating island technology, the structure new type health ecosystem to it in the central area in lake water waters
Ecological management is carried out, the water quality of part water body is made to get a promotion.
The step 1 includes the following steps：
Step 1：It is carried out disinfection to lake water water bottom using particle or tablet, is disappeared to water body using powder medicament
Poison；For the purification of water quality to natural water bodies such as river, river, lake, libraries, it is dirty can effectively to reduce organic pollution and ammonia nitrogen of water body etc.
Dye and bacterial regrowth improve the eutrophication of water body, prevent the wawter bloom etc. of algae from having apparent effect to removing black and odorous water
Fruit.It can eliminate black and odorous water, reduce organic pollution and ammonia nitrogen in a short time, so that water body is become clear in appearance, eliminate it is smelly
Taste is the precondition of subsequent ecological management process；The efficiency of ecological management water body can be improved.
Step 2：The chlorella of preculture is put into the waters；
Step 3：Granular pattern and pulvis beneficial bacterium floc sedimentation are put into the waters；
Step 4：Compound high-activity carbon source liquid flora is put into the waters.The bacterium floc sedimentation and compound high-activity carbon
Source liquid flora is included there are many beneficial microbe, and microbial reaction process is based on enzymatic reaction, by being produced in organism
The raw specific proteins with catalysis decompose mud, eliminate stench as catalyst, purification sewage.
Microorganism formulation technology major advantage is the microorganism concn that can be improved rapidly in pollution medium, and is expected short-term
The interior biodegradation rate for improving pollutant, in addition biological respinse usual conditions are mild, with good investment, expense is few, consumption is low, and
Effect is good, process is stable, easy to operate
Floating refuse blocking apparatus is laid in waters；Floating refuse blocking apparatus can be it is soft enclose lattice, it is described soft to enclose lattice
Including high-strength and waterproofing cloth, on column body, under respectively have drawstring, reinforcing strip and tension counterweight chain as longitudinal stress component, column body is anti-
Draw performance high.Appearance is bright and clean, is conducive to Oil Guide, convenient for cleaning；There is different shape floating body may be selected：Water-drop-shaped (tumbler shape) is in urgency
It is more stable in stream；Cylinder has bigger buoyancy reserve, rider more preferable；Blocky floating body reservoir volume is small, coordinates cloth with up- coiler
It puts rapider laborsaving.
Aeration oxygen replenishing circulator is laid in waters, for the purification of water quality to lake natural water body, can effectively be reduced
The contamination indexes such as the organic pollution and ammonia nitrogen of water body improve the eutrophication of water body, prevent algae to removing black and odorous water
The wawter bloom etc. of class has positive effect.It can eliminate black and odorous water, reduce organic pollution and ammonia nitrogen in a short time, in appearance
On so that water body become clear, eliminated stink；Even if under conditions of external pollution sources are not truncated, it by aeration aerating and can still add
Add the measures such as microorganism fungus kind, reduce impact of the extraneous contamination source to water body, the situation of natural water body pollution aggravation is made to be controlled
System.
The structure new type health ecosystem includes：Input or plant can constitute complete bio chain microorganism,
Planktonic organism, submerged plant, macrobenthos, ominivore-fish and predacious fish.
After submerged plant is successfully transplanted, survival rate is mainly determined by two aspect factors：
The height of water transparency.Water transparency is directly related with underwater euphotic layer thickness, and water transparency is higher, water
Lower euphotic layer is thicker, i.e., light penetrates deeper under water；
How much is attachment on submerged plant plant.Attachment can excessively influence its blade receiving sun on submerged plant plant
The area of light, and then influence its photosynthesis and submerged plant survival rate.
It further include step 5：To carrying out water quality and aquatile Monitoring Indexes, formulated according to monitoring result described novel strong
The Adjusted Option of the Adjusted Option of the health ecosystem, the new type health ecosystem includes：
After submerged plant is successfully transplanted, is judged according to water quality and aquatile Indexs measure situation, implement water in time
Body transparency promotes engineering and submerged plant surface attachments remove engineering.
The water transparency promoted engineering include implement nitrogen source cut down engineering, Phytoplankton biomass control engineering and/
Or suspended substance sedimentation engineering, it includes increasing macrobenthos that the submerged plant surface attachments, which remove engineering construction method,
Injected volume and/or appropriateness disturbance submerged plant, the Adjusted Option of the new type health ecosystem further include：According to submerged plant
Structure of community survey data analyzes growth vigor of the various submerged plants in lake region and selects the dominant population in the waters,
Following amplification steps are carried out to the dominant population：
Step is 1.：According to the reproductive habit of submerged plant, select suitable plantation season, plant plant, program request stem tuber or
It scatters seeds；
Step is 2.：Closeer region strand is grown in submerged plant dominant population to pull out, plant grows sparse to dominant population
Region.
It can also include vacuating submerged plant that the water transparency, which promotes engineering, and submerged plant is generally perennial herb
Plant, there is an autonomous replication ability, and after winter dormancy, the next spring can regerminate, flourish.Often go out in engineering practice
Existing submerged plant First Year growth is vigorous, then grows the phenomenon that impetus dies down, this is primarily due to submerged plant growth space
Caused by dog-eat-dog, i.e. the submerged plant reproductive capacity of the previous year or several years die down, but cause again without the space of its breeding
Submerged plant plant cannot update.In engineering practice, annual autumn carries out appropriateness in the vigorous region of submerged plant growth
It vacuates, to reserve sufficient growing space for the autonomous replication of submerged plant and update, to ensure Submerged plant communities
Stability, the sustainability of structure.
The Adjusted Option of the new type health ecosystem further includes：According to Fish Community Structures monitoring result, when omnivorous
Property fish biomass account for the ratio of total biomass in 20%-30% or more, concentrate to catch to concentrate annual 10-11 months and catch meat
Property fish adult；The annual 3-4 months, put predacious fish fry in a suitable place to breed in due course.
The Adjusted Option of the new type health ecosystem further includes the adjustment to benthic fauna, the pipe of zoobenthos
Reason refers mainly to the management of large-scale benthic mollusc, and macrobenthos spiral shell, freshwater mussel etc. mainly based on protection, control zoobenthos
Property fish are put in a suitable place to breed, such as carp.Due to the plantation of water plant, water body attachment base and other physicochemical environments can substantially improve, greatly
Type zoobenthos quantity can dramatically increase, to enhance the self-purification capacity of water body and to the control ability of phytoplankton.Spiral shell, freshwater mussel etc.
Initial stage can suitably put in a suitable place to breed, but mainly based on protection, forbid dragging for the macrobenthos such as spiral shell, shrimp.
The Adjusted Option of the new type health ecosystem further includes microbiologic population's in-situ construction, aquatic ecosystem structure
After success, with the continuous improvement of biomass of submerged plant, the main environment of attachment existence is provided for microorganism.It is certain simultaneously
Submerged plant humus enough carbon sources are also provided for microorganism, be conducive to its breeding.
The formation of the ecosystem structure in lake is slow, at structure, food web and the bottom for completing aquatic high vegetation
After the engineerings such as community hight of dwelling, initial stage system is stablized not enough, it is necessary to and give structure of community and optimizes and revises, between making each population,
And the stable clear water state ecosystem could be formed after developing in harmony, organically blend with surrounding enviroment, to keep water quality clear for a long time
It is clear.It is normal come the analyzing influence ecosystem by the continuous monitoring to each element in system during optimization adjustment of system
The internal and external factor of operation, while optimizing aquatic high vegetation structure, food web frame and Benthic ecology system structure, it makes overall plans and coordinate
Each trophic level of the ecosystem, establish water layer-bottom dwell balance, scrape food functional group-submerged vegetation balance, benthic fishes-sink water and plant
Be balanced, filter food functional group-phytoplankton balance etc., it is final to establish stable, the long-acting lake clear water state ecosystem.
The lake water ecological restoring method that the drop nitrogen subtracts phosphorus includes sudden pollusion atmospheric event contingency management step, should
Step includes：
When oil liquid is spread, with semi-floating enclosure circle every perimeter is gradually reduced；Oil liquid Relatively centralized
Afterwards, asphalt felt is shed to the water surface, is removed after absorption；
When alga eruption, the greening of water body color turns yellow, and adopts phytoplankton sample inspection rapidly, determines algicide user
Case carries out killing algae operation；If there is algal bloom, algae is gathered in the water surface, uses alga removing ship to carry out algae collection and water immediately
Algae mask work；
It when water body muddiness, is influenced by some factors, suspended particulate amount increases sharply in a relatively short period of time in water body, leads
It causes transparency to decline, Novel environment-friendlymaterial material can be used to promote sedimentation；
When dissolved oxygen is less than 4mg/L in water body, artificial oxygenation should be carried out；
When poisonous and harmful substance enters local water body, curtain-type enclosure should be timely used and block isolation, and use diving
Pump detaches contaminant water；
When dense sewage or flood largely enter water body, spillway should be opened in time and quickly discharged water.
Several preferred embodiments of the application have shown and described in above description, but as previously described, it should be understood that the application
Be not limited to form disclosed herein, be not to be taken as excluding other embodiments, and can be used for various other combinations,
Modification and environment, and the above teachings or related fields of technology or knowledge can be passed through in application contemplated scope described herein
It is modified.And changes and modifications made by those skilled in the art do not depart from spirit and scope, then it all should be in this Shen
It please be in the protection domain of appended claims.
Claims (10)
1. a kind of drop nitrogen subtracts the lake water ecological restoring method of phosphorus, which is characterized in that including：
Step 1：Biological treating is carried out to entire lake water waters using biotechnology；
Step 2：Revetment, into bank water body and mainly enter the exit of a lake bottom mud carry out physics cleaning, improve oxygen content of water and
Transparency；
Step 3：Enter in revetment, offshore and mainly the exit of a lake respectively to transplant the strong emergent aquactic plant of soil pick-up ability, detergent power respectively strong
Submerged plant and floating plant with stronger detergent power and ornamental value；
Step 4：It is carried out using artificial floating island technology, the structure new type health ecosystem in the central area in lake water waters
Ecological management makes the water quality of part water body get a promotion.
2. drop nitrogen according to claim 1 subtracts the lake water ecological restoring method of phosphorus, which is characterized in that the step 1 includes
Following steps：
Step 1：It is carried out disinfection to lake water water bottom using particle or tablet, is carried out disinfection to water body using powder medicament；
Step 2：The chlorella of preculture is put into the waters；
Step 3：Granular pattern and pulvis beneficial bacterium floc sedimentation are put into the waters；
Step 4：Compound high-activity carbon source liquid flora is put into the waters.
3. drop nitrogen according to claim 2 subtracts the lake water ecological restoring method of phosphorus, which is characterized in that the cloth blow up in waters
Floating rubbish blocking apparatus；
Aeration oxygen replenishing circulator is laid in waters, for the purification of water quality to lake natural water body, can effectively reduce water body
Organic pollution and the contamination indexes such as ammonia nitrogen improve the eutrophication of water body to removing black and odorous water, prevent algae
Wawter bloom etc. has positive effect.
4. drop nitrogen according to claim 3 subtracts the lake water ecological restoring method of phosphorus, which is characterized in that the structure is novel strong
The health ecosystem includes：Input or plant can constitute the microorganism of complete bio chain, planktonic organism, submerged plant, large size
Zoobenthos, ominivore-fish and predacious fish.
5. drop nitrogen according to claim 4 subtracts the lake water ecological restoring method of phosphorus, which is characterized in that further include step 5：
To progress water quality and aquatile Monitoring Indexes, the Adjusted Option of the new type health ecosystem is formulated according to monitoring result,
The Adjusted Option of the new type health ecosystem includes：
It after submerged plant is successfully transplanted, is judged according to water quality and aquatile Indexs measure situation, it is saturating to implement water body in time
Lightness promotes engineering and submerged plant surface attachments remove engineering.
6. drop nitrogen according to claim 5 subtracts the lake water ecological restoring method of phosphorus, which is characterized in that the water transparency
It includes implementing nitrogen source to cut down engineering, Phytoplankton biomass control engineering and/or suspended substance sedimentation engineering to promote engineering.
7. drop nitrogen according to claim 6 subtracts the lake water ecological restoring method of phosphorus, which is characterized in that the submerged plant table
It includes increasing injected volume and/or the appropriateness disturbance submerged plant of macrobenthos that face attachment, which removes engineering construction method,.
8. drop nitrogen according to claim 7 subtracts the lake water ecological restoring method of phosphorus, which is characterized in that the new type health life
The Adjusted Option of state system further includes：According to Submerged plant communities energy structure survey data, various submerged plants are analyzed in lake region
Growth vigor and select the dominant population in the waters, following amplification steps are carried out to the dominant population：
Step is 1.：According to the reproductive habit of submerged plant, suitable plantation season is selected, plant, program request stem tuber is transplanted or broadcasts sowing
Seed；
Step is 2.：Closeer region strand is grown in submerged plant dominant population to pull out, plant grows sparse region to dominant population.
9. drop nitrogen according to claim 8 subtracts the lake water ecological restoring method of phosphorus, which is characterized in that the new type health life
The Adjusted Option of state system further includes：According to Fish Community Structures monitoring result, when ominivore-fish biomass accounts for total biomass
Ratio in 20%-30% or more, concentrate fishing ominivore-fish；
It is annual to concentrate fishing predacious fish adult the 10-11 months；The annual 3-4 months, put predacious fish fry in a suitable place to breed in due course.
10. drop nitrogen according to claim 9 subtracts the lake water ecological restoring method of phosphorus, which is characterized in that further include sudden
Environment Pollution Event contingency management step, the step include：
When oil liquid is spread, with semi-floating enclosure circle every perimeter is gradually reduced；After oil liquid Relatively centralized, to
The water surface sheds asphalt felt, is removed after absorption；
When alga eruption, the greening of water body color turns yellow, and adopts phytoplankton sample inspection rapidly, determines algicide operational version, into
Row kills algae operation；If there is algal bloom, algae is gathered in the water surface, and carry out algae collection using alga removing ship immediately detaches with algae
Work；
It when water body muddiness, is influenced by some factors, suspended particulate amount increases sharply in a relatively short period of time in water body, causes
Lightness declines, and Novel environment-friendlymaterial material can be used to promote sedimentation；
When dissolved oxygen is less than 4mg/L in water body, artificial oxygenation should be carried out；
When poisonous and harmful substance enters local water body, curtain-type enclosure should be timely used and block isolation, and will using immersible pump
Contaminant water detaches；
When dense sewage or flood largely enter water body, spillway should be opened in time and quickly discharged water.
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| CN109231699A (en) * | 2018-10-26 | 2019-01-18 | 湖南理工学院 | A kind of Lake Water ecological restoring method |
| CN109247274A (en) * | 2018-10-31 | 2019-01-22 | 武汉中科水生环境工程股份有限公司 | A kind of zoobenthos for water ecology reparation expands numerous bioanalysis |
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